whales don't just go to the market checking projects out that they can invest their money in, what they actually do is to select any of the top 100 coins in the market and pump a lot of money into that coin so that there will be a sporadic increase in the price of the coin, then they dump the coin once it has gotten to a particular level, so the chance of whales coming to this project is low.
Each DGD represent 1g of gold.
It's price is the price of 1g of gold.
No manipulation is possible.
This is the cool of gold-backed stablecoins.
1) If whales come in and buy DGDs, they have to wait for the company to acquire and vault more gold to create more DGDs.
The price of 1 DGD is designed to represent the price of 1g of gold.
2) As soon as the price of 1 DGD > price of 1g of gold, DGD owners redeem (sell) their DGDs for gold,
buy gold on the open market,
wait for the price of 1 DGD to align again to the price of 1g of gold,
convert it again in DGDs.
This speculation game guarantees that the price of 1 DGD = price of 1g of gold
This speculation is only possible with those gold-backed stablecoins which allow the redemption of their coins for the metal.
That is the reason why the redemption for physical is one of the first features to look at in order to judge a gold-backed stablecoin project